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Groups > comp.lang.c > #124663

Re: UB in asm

From Keith Thompson <kst-u@mib.org>
Newsgroups comp.lang.c
Subject Re: UB in asm
Date 2017-12-24 15:58 -0800
Organization None to speak of
Message-ID <lnwp1bfzkh.fsf@kst-u.example.com> (permalink)
References (6 earlier) <AgP%B.88960$uS5.19755@fx45.am4> <p1p4fk$74e$1@news.albasani.net> <1TV%B.77911$q_1.6982@fx16.am4> <ln1sjjhhaa.fsf@kst-u.example.com> <oFW%B.89266$g_1.10429@fx35.am4>

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bartc <bc@freeuk.com> writes:
> On 24/12/2017 22:50, Keith Thompson wrote:
>> bartc <bc@freeuk.com> writes:
[...]
>>> So, in the original language, I might cast a generic pointer to a
>>> function pointer, which I /know/ shouldn't be a problem in my platforms
>>> of interest (eg. x86 and ARM).
>>>
>>> But in C, that's apparently illegal. (Why? Perhaps because on some
>>> obscure system that conversion doesn't work. But I don't care.)
>> 
>> It's not "illegal".  The C standard doesn't even have a concept of
>> "illegal".
>
>> But you knew that.
>
> Actually I didn't. I've given up trying to figure out what is and isn't 
> allowed in C.

Search for the word "illegal" in n1570.pdf.  You'll find a single
occurrence in a footnote discussing the SIGILL signal.

> As far as I can tell, it seems to be up to the programmer whether a 
> program compiles or not, by mixing and matching compilers and options 
> until they get the desired result.
>
> If use gcc and tell it -pedantic-errors, then it says:
>
>   error: ISO C forbids conversion of object pointer to function pointer
>   type

I believe that's a bug in gcc.  I don't see an existing bug report.
I'll submit one.  (clang doesn't report an error with the same options.)

As a basis for any further discussion here's the test program I used:

int main(void) {
    typedef void (func)(void);
    void *ptr = 0;
    func *fptr = (func*)ptr;
}

Converting an object pointer to a function pointer does not violate
any constraint or syntax rule.  It does have undefined behavior (by
omission, since there nothing in the standard defines the behavior).

A conforming compiler could recognize that undefined behavior is
inevitable and reject the program on that basis, but the error message
at least needs to be reworded.

> If I can't compile and program, and it says something is forbidden, then 
> it looks pretty illegal to me.
> 
> On the other hand, if I leave out that option (or use any other 
> compiler), it says this:
>
>    <nothing>
>
> So now you're right, it isn't illegal!

More of your usual obfuscation.

> In other words, a C programmer has to make this stuff up as they go along.

Nonsense.

> But what would you tell a beginner regarding the general validity of 
> converting void* to function pointers? I wouldn't have a clue how to 
> advise anyone because the language does a lousy job of it, while 
> compilers will just do what you tell them.

I'd tell them that it's not forbidden, but it has undefined behavior.
It should never be done in code that's intended to be portable.  It can
be done in more restricted code that's portable only to implementations
that support it.

See, for example, the POSIX dlsym() function, which relies on
conversions between void* and function pointers.

Your decision not to try to explain it is wise since you clearly
don't understand it yourself and are unwilling to learn.

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"

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Thread

Re: What every compiler writer should know about programmersWhat every compiler writer should know about programmers gazelle@shell.xmission.com (Kenny McCormack) - 2017-12-24 07:54 +0000
  Re: What every compiler writer should know about programmersWhat every compiler writer should know about programmers bartc <bc@freeuk.com> - 2017-12-24 12:34 +0000
    Re: What every compiler writer should know about programmersWhat every compiler writer should know about programmers Melzzzzz <Melzzzzz@zzzzz.com> - 2017-12-24 12:44 +0000
    Re: UB in asm Noob <root@127.0.0.1> - 2017-12-24 15:26 +0100
      Re: UB in asm bartc <bc@freeuk.com> - 2017-12-24 14:58 +0000
        Re: UB in asm Johannes Bauer <dfnsonfsduifb@gmx.de> - 2017-12-24 21:59 +0100
          Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-24 13:35 -0800
            Re: UB in asm Robert Wessel <robertwessel2@yahoo.com> - 2017-12-24 16:10 -0600
            Re: UB in asm Johannes Bauer <dfnsonfsduifb@gmx.de> - 2018-01-02 12:06 +0100
              Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2018-01-02 08:03 -0500
                Re: UB in asm supercat@casperkitty.com - 2018-01-02 08:53 -0800
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2018-01-02 09:33 -0800
                Re: UB in asm supercat@casperkitty.com - 2018-01-02 09:53 -0800
                Re: UB in asm scott@slp53.sl.home (Scott Lurndal) - 2018-01-02 19:31 +0000
              Re: UB in asm Keith Thompson <kst-u@mib.org> - 2018-01-02 09:26 -0800
                Re: UB in asm Johannes Bauer <dfnsonfsduifb@gmx.de> - 2018-01-04 10:56 +0100
                Re: UB in asm James Kuyper <jameskuyper@verizon.net> - 2018-01-04 05:19 -0500
                Re: UB in asm aph@littlepinkcloud.invalid - 2018-01-04 05:38 -0600
                Re: UB in asm James Kuyper <jameskuyper@verizon.net> - 2018-01-04 07:05 -0500
                Re: UB in asm aph@littlepinkcloud.invalid - 2018-01-04 06:46 -0600
                Re: UB in asm scott@slp53.sl.home (Scott Lurndal) - 2018-01-04 16:09 +0000
                Re: UB in asm supercat@casperkitty.com - 2018-01-04 08:12 -0800
                Re: UB in asm supercat@casperkitty.com - 2018-01-04 08:00 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2018-01-04 10:02 -0500
          Re: UB in asm James Kuyper <jameskuyper@verizon.net> - 2017-12-24 17:04 -0500
          Re: UB in asm bartc <bc@freeuk.com> - 2017-12-24 22:29 +0000
            Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-24 14:50 -0800
              Re: UB in asm bartc <bc@freeuk.com> - 2017-12-24 23:23 +0000
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-24 15:58 -0800
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-24 16:26 -0800
                Re: UB in asm Gareth Owen <gwowen@gmail.com> - 2017-12-26 18:03 +0000
                Re: UB in asm supercat@casperkitty.com - 2017-12-26 12:23 -0800
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-26 12:44 -0800
                Re: UB in asm supercat@casperkitty.com - 2017-12-27 08:31 -0800
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-27 09:15 -0800
                Re: UB in asm supercat@casperkitty.com - 2017-12-27 09:55 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-27 16:00 -0500
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-27 13:13 -0800
                Re: UB in asm Tim Rentsch <txr@alumni.caltech.edu> - 2017-12-27 11:28 -0800
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-27 11:35 -0800
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-27 20:29 +0000
                Re: UB in asm supercat@casperkitty.com - 2017-12-27 12:46 -0800
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-27 22:00 +0000
                Re: UB in asm supercat@casperkitty.com - 2017-12-27 14:16 -0800
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-27 13:09 -0800
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-26 20:54 +0000
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-25 01:24 +0000
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-24 17:55 -0800
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-27 18:24 +0000
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-29 19:39 -0800
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-30 11:20 +0000
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-24 21:17 -0500
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-24 18:34 -0800
                Re: UB in asm Noob <root@127.0.0.1> - 2017-12-25 14:36 +0100
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-25 15:52 +0000
            Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-24 21:22 -0500
              Re: UB in asm bartc <bc@freeuk.com> - 2017-12-25 13:08 +0000
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-25 10:06 -0500
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-26 16:07 +0100
                Re: UB in asm Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-12-26 08:55 -0800
                Re: UB in asm already5chosen@yahoo.com - 2017-12-26 09:45 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-26 13:12 -0500
                Re: UB in asm jameskuyper@verizon.net - 2017-12-26 10:30 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-26 13:48 -0500
                Re: UB in asm already5chosen@yahoo.com - 2017-12-26 10:51 -0800
                Re: UB in asm Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-12-27 05:27 -0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-27 10:09 +0100
                Re: UB in asm already5chosen@yahoo.com - 2017-12-27 04:10 -0800
                Re: UB in asm "James R. Kuyper" <jameskuyper@verizon.net> - 2017-12-27 08:50 -0500
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-27 14:30 +0000
                Re: UB in asm jameskuyper@verizon.net - 2017-12-27 06:49 -0800
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-27 15:25 +0000
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-27 17:05 +0100
                Re: UB in asm supercat@casperkitty.com - 2017-12-27 09:45 -0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-27 20:40 +0100
                Re: UB in asm supercat@casperkitty.com - 2017-12-27 12:43 -0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-28 10:09 +0100
                Re: UB in asm Geoff <geoff@invalid.invalid> - 2017-12-28 11:24 -0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-29 08:59 +0100
                Re: UB in asm Geoff <geoff@invalid.invalid> - 2017-12-29 13:25 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-29 11:29 -0500
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-27 18:06 +0000
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-27 20:23 +0000
                Re: UB in asm supercat@casperkitty.com - 2017-12-27 12:59 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-27 16:28 -0500
                Re: UB in asm supercat@casperkitty.com - 2017-12-27 14:34 -0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-28 11:09 +0100
                Re: UB in asm supercat@casperkitty.com - 2017-12-28 08:57 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-28 09:37 -0500
                Re: UB in asm supercat@casperkitty.com - 2017-12-28 10:47 -0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-28 11:04 +0100
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-27 21:17 +0000
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-28 01:45 +0000
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-28 11:11 +0100
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-27 16:17 -0500
                Re: UB in asm supercat@casperkitty.com - 2017-12-27 13:51 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-27 17:49 -0500
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-27 22:08 +0000
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-27 17:41 -0500
                Re: UB in asm supercat@casperkitty.com - 2017-12-27 15:36 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-29 11:49 -0500
                Re: UB in asm supercat@casperkitty.com - 2017-12-29 12:53 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-29 21:27 -0500
                Re: UB in asm supercat@casperkitty.com - 2017-12-29 20:42 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-30 20:50 -0500
                Re: UB in asm supercat@casperkitty.com - 2018-01-02 08:41 -0800
                Re: UB in asm supercat@casperkitty.com - 2017-12-27 14:41 -0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-28 10:58 +0100
                Re: UB in asm already5chosen@yahoo.com - 2017-12-28 03:46 -0800
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-28 08:41 -0800
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-28 12:15 +0000
                Re: UB in asm Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-12-28 05:23 -0800
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-28 13:49 +0000
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-28 14:42 +0000
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-28 11:56 -0500
                Re: UB in asm supercat@casperkitty.com - 2017-12-28 09:58 -0800
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-28 11:07 -0800
                Re: UB in asm supercat@casperkitty.com - 2017-12-28 13:32 -0800
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-28 13:54 -0800
                Re: UB in asm supercat@casperkitty.com - 2017-12-28 14:06 -0800
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-28 15:14 -0800
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-28 19:45 +0000
                Re: UB in asm Ian Collins <ian-news@hotmail.com> - 2017-12-29 08:51 +1300
                Re: UB in asm supercat@casperkitty.com - 2017-12-28 12:14 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-28 20:03 -0500
                Re: UB in asm already5chosen@yahoo.com - 2017-12-29 02:28 -0800
                Re: UB in asm Geoff <geoff@invalid.invalid> - 2017-12-29 13:54 -0800
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-29 14:51 -0800
                Re: UB in asm Geoff <geoff@invalid.invalid> - 2017-12-29 16:04 -0800
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-30 02:06 +0000
                Re: UB in asm supercat@casperkitty.com - 2017-12-29 11:22 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-29 21:48 -0500
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-29 09:11 +0100
                Re: UB in asm Spiros Bousbouras <spibou@gmail.com> - 2017-12-29 08:52 +0000
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-29 10:58 +0100
                Re: UB in asm Spiros Bousbouras <spibou@gmail.com> - 2017-12-29 10:38 +0000
                Re: UB in asm already5chosen@yahoo.com - 2017-12-29 03:01 -0800
                Re: UB in asm already5chosen@yahoo.com - 2017-12-29 03:07 -0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-29 12:21 +0100
                Re: UB in asm supercat@casperkitty.com - 2017-12-29 12:20 -0800
                Re: UB in asm Robert Wessel <robertwessel2@yahoo.com> - 2017-12-29 16:05 -0600
                Re: UB in asm supercat@casperkitty.com - 2017-12-29 14:48 -0800
                Re: UB in asm Spiros Bousbouras <spibou@gmail.com> - 2017-12-29 23:05 +0000
                Re: UB in asm supercat@casperkitty.com - 2017-12-29 17:12 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-29 22:09 -0500
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-29 21:56 -0500
                Re: UB in asm Robert Wessel <robertwessel2@yahoo.com> - 2017-12-30 00:58 -0600
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-29 11:43 +0000
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-29 15:14 +0100
                Re: UB in asm Geoff <geoff@invalid.invalid> - 2017-12-29 14:11 -0800
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-30 02:27 +0000
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-29 22:25 -0500
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-28 14:55 +0100
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-28 08:46 -0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-28 17:50 +0100
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-28 14:30 +0000
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-28 11:29 -0500
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-28 17:46 +0100
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-28 12:17 -0500
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-28 09:25 -0800
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-28 17:08 +0000
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-28 14:57 +0000
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-28 16:09 +0000
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-28 17:11 +0100
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-28 17:04 +0000
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-28 09:16 -0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-28 20:44 +0100
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-28 20:13 +0000
                Re: UB in asm supercat@casperkitty.com - 2017-12-28 12:48 -0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-29 11:03 +0100
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-28 13:08 -0800
                Re: UB in asm Ian Collins <ian-news@hotmail.com> - 2017-12-29 11:17 +1300
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-28 22:54 +0000
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-29 11:07 +0100
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-28 15:46 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-28 17:00 -0500
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-28 23:39 +0000
                Re: UB in asm supercat@casperkitty.com - 2017-12-28 16:05 -0800
                Re: UB in asm Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-12-28 15:55 -0800
                Re: UB in asm Spiros Bousbouras <spibou@gmail.com> - 2017-12-29 07:49 +0000
                Re: UB in asm Reinhardt Behm <rbehm@hushmail.com> - 2017-12-29 15:46 +0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-29 10:34 +0100
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-29 12:05 +0000
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-29 14:51 +0100
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-29 15:09 +0000
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-29 09:05 -0800
                Re: UB in asm supercat@casperkitty.com - 2017-12-29 13:35 -0800
                Re: UB in asm Robert Wessel <robertwessel2@yahoo.com> - 2017-12-29 15:38 -0600
                Re: UB in asm supercat@casperkitty.com - 2017-12-29 14:15 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-29 18:07 -0500
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-30 13:12 +0100
                Re: UB in asm Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-12-30 05:19 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-30 09:33 -0500
                Re: UB in asm supercat <flatfinger@casperkitty.com> - 2017-12-30 09:50 -0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-30 21:47 +0100
                Re: UB in asm supercat@casperkitty.com - 2017-12-30 13:26 -0800
                Re: UB in asm Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-12-30 13:53 -0800
                Re: UB in asm supercat@casperkitty.com - 2017-12-30 14:19 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-30 19:13 -0500
                Re: UB in asm Reinhardt Behm <rbehm@hushmail.com> - 2017-12-29 15:42 +0800
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-29 20:33 +0000
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-29 18:27 -0500
                Re: UB in asm Ian Collins <ian-news@hotmail.com> - 2017-12-30 12:49 +1300
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-29 23:56 +0000
                Re: UB in asm supercat@casperkitty.com - 2017-12-29 16:59 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-29 22:45 -0500
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-30 12:49 +0000
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-30 15:01 -0500
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-30 20:42 +0000
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-30 14:11 -0800
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-30 22:25 +0000
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-30 19:02 -0500
                Re: UB in asm already5chosen@yahoo.com - 2017-12-31 03:25 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-31 19:48 -0500
                Re: UB in asm supercat@casperkitty.com - 2018-01-02 12:08 -0800
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-28 11:40 -0500
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-28 17:35 +0000
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-28 18:19 +0000
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-28 14:31 -0500
                Re: UB in asm jameskuyper@verizon.net - 2017-12-27 08:52 -0800
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-27 17:51 +0000
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-27 18:34 +0000
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-27 21:14 +0000
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-27 21:51 +0000
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-28 02:09 +0000
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-28 12:21 +0100
                Re: UB in asm asetofsymbols@gmail.com - 2017-12-28 00:14 -0800
                Re: UB in asm supercat@casperkitty.com - 2017-12-27 08:57 -0800
                Re: UB in asm Keith Thompson <kst-u@mib.org> - 2017-12-27 09:55 -0800
                Re: UB in asm supercat@casperkitty.com - 2017-12-27 11:07 -0800
                Re: UB in asm Geoff <geoff@invalid.invalid> - 2017-12-27 22:04 -0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-28 12:27 +0100
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-27 11:05 -0500
                Re: UB in asm Ian Collins <ian-news@hotmail.com> - 2017-12-28 16:36 +1300
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-28 12:31 +0000
                Re: UB in asm bartc <bc@freeuk.com> - 2017-12-28 12:35 +0000
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-28 15:05 +0100
                Re: UB in asm Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-12-28 14:47 +0000
                Re: UB in asm Richard Damon <Richard@Damon-Family.org> - 2017-12-28 11:45 -0500
                Re: UB in asm supercat@casperkitty.com - 2017-12-28 09:16 -0800
                Re: UB in asm supercat@casperkitty.com - 2017-12-28 11:00 -0800
                Re: UB in asm Reinhardt Behm <rbehm@hushmail.com> - 2017-12-29 15:30 +0800
                Re: UB in asm supercat@casperkitty.com - 2017-12-29 11:44 -0800
                Re: UB in asm Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-12-28 15:25 -0800
                Re: UB in asm Spiros Bousbouras <spibou@gmail.com> - 2017-12-29 08:14 +0000
                Re: UB in asm Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-12-29 03:29 -0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-29 14:57 +0100
                Re: UB in asm supercat@casperkitty.com - 2017-12-29 12:32 -0800
                Re: UB in asm jameskuyper@verizon.net - 2017-12-28 10:55 -0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-27 16:19 +0100
                Re: UB in asm supercat@casperkitty.com - 2017-12-27 09:10 -0800
                Re: UB in asm supercat@casperkitty.com - 2017-12-26 11:54 -0800
                Re: UB in asm David Brown <david.brown@hesbynett.no> - 2017-12-27 09:59 +0100
      Re: UB in asm already5chosen@yahoo.com - 2017-12-24 07:03 -0800

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